Possible Clues:

• 'Nobody wants to see you slobbering all over each other'
• "Not in public, you two!"
• "Take it elsewhere, lovebirds!"
• Admonishment for public displays of affection
• Cry to the overly amorous
• Order to curtail public bussing
• 25-Across-interrupting cry
• "Whoa! Do that somewhere else!" ... which hints at what can be shared by the beginning and end of the answers to starred clues
• Become annoyingly amorous — we object going: ' ______ "
• What's said when one's due to be cuddled by future partner